Update ruff requirement from <0.8 to <0.9

Updates the requirements on [ruff](https://github.com/astral-sh/ruff) to permit the latest version.
- [Release notes](https://github.com/astral-sh/ruff/releases)
- [Changelog](https://github.com/astral-sh/ruff/blob/main/CHANGELOG.md)
- [Commits](astral-sh/ruff@v0.0.18...0.8.0)

---
updated-dependencies:
- dependency-name: ruff
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <support@github.com>

pyproject.toml

@@ -129,7 +129,7 @@ develop = [
   "mypy<1.14",
   "poethepoet<0.31",
   "pyproject-fmt<2.6",
-  "ruff<0.8",
+  "ruff<0.9",
   "validate-pyproject<0.24",
 ]
 docs = [